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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 336 days
growth lost from castration methods (knife & band)
effects of estrogen
effects of BST
mare gestation
2. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
urethra
why does the cow need fat deposits during pregnancy?
Grading choice
kidney stones also called ________ ___________ can develop in the sigmoid flexure
3. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
6-8 weeks
ewe ovulation
leydid or interstitial cells
things to check for in a breeding soundness exam (BSE)
4. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
Holstein Cow
butterfat
Dairy Cattle milking schedule
oviducts
5. 1. brain function - 2. blood flow - 3. willing female
Follical Stimulating in females
what has to happen for males for copulation to occur
cow estrus cycle
6-8 weeks
6. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
what has to happen for males for copulation to occur
burdizzo
growth lost from castration methods (knife & band)
Dairy calves are removed from cow at birth to...
7. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
4 major reasons for culling dairy cows
scrotal circumference (BSE)
sertoli cells
ewe estrus cycle
8. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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9. When are dairy cattle dehorned?
6-8 weeks
~1 month
femininity of a heifer
Sperm growth rate
10. ~60 days before calving
dry-off time in dairy cattle
mare estrus cycle
Size of cow in relation to the amount of milk produced
pelvis
11. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
effects of BST
Avg. bull specs
sertoli cells
oviducts
12. Parturition is controlled by...
Mares
Follical Stimulating in females
femininity of a heifer
Hormones from both the fetus and the mom.
13. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
growth lost from castration methods (knife & band)
pelvis
hormones
uterus
14. Scar tissue plugs up chambers of udder
Parturition
eminal vesicles
mastitis
things to check for in a breeding soundness exam (BSE)
15. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
Dairy Cattle Lactation (standard)
Dairy Cattle Lactation (standard)
what has to happen for males for copulation to occur
butterfat
16. Superior genes are _______ to multiply
Hormones from both the fetus and the mom.
vagina
testis (gonads)
Hard
17. Animals which have only one estrous cycle (ex: dog - fox)
Mares
cow estrus
elastrator
monestrous
18. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
sow ovulation
dry matter and water
testosterone
feeding a high producing dairy cow
19. Allows extension of penis without fibro-elastic penis
sigmoid flexure
cow gestation
organs used in spermatogenesis
dartos muscle
20. 26 hours after estrus begins
Size of cow in relation to the amount of milk produced
ewe ovulation
cremaster muscle
cow estrus cycle
21. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
normal presentation of the fetus
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
estrous
seasonally polyestrous
22. What makes the milk flow through the mammary glands?
libido test (BSE)
Blood
Dairy Cattle milking schedule
dry-off time in dairy cattle
23. Animal which has been castrated after puberty
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
stag
polyestrous
scrotum
24. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
monestrous
mare gestation
Follical Stimulating in females
eminal vesicles
25. When are steers and heifers weaned from bottle feeding?
6-8 weeks
Bull's fibro-elastic penis
#1 cost in production
vulva
26. 2 month growth cycle. stored in the epididymis of the bull
urethra
Sperm growth rate
Lutinizing Hormone in males
sow estrus cycle
27. Provide nourishment for the developing sperm
penis proper
~1 month
sertoli cells
estrous
28. Duct through penis that carries sperm and urine
mare's estrous cycle
normal presentation of the fetus
cervix
urethra
29. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
Holstein Cow
van deferens
rectal palpation (BSE)
uterus
30. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
sigmoid flexure
penis proper
age and castration
Reasons for gestation length being affected
31. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
Dairy Cattle Lactation (standard)
Holstein Cow
ewe gestation
behavioral signs of estrus
32. 1. brain function - 2. blood flow - 3. willing female
rectal palpation (BSE)
polyestrous
age and castration
what has to happen for males for copulation to occur
33. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
sow estrus
testis (gonads)
Reasons for gestation length being affected
Where livelihood is in agriculture
34. 1-3 days
prostaglandin
Avg. bull specs
cow gestation
sow estrus
35. Look for infection - split - and rupture of the penis
penis and prepuce observation (BSE)
effects of BST
rectal palpation (BSE)
age and castration
36. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
cow gestation
retractor muscles
sow estrus
stag
37. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
organs used in spermatogenesis
penis sizes vs delivering methods
penis proper
Avg. bull specs
38. What makes the milk flow through the mammary glands?
Blood
stag
testis (gonads)
Lutinizing Hormone in females
39. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
Follical Stimulating in males
Bull's fibro-elastic penis
cryptorchid
effects of BST
40. Implies the amount of estrogen production
van deferens
organs used in spermatogenesis
kidney stones also called ________ ___________ can develop in the sigmoid flexure
femininity of a heifer
41. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
sow ovulation
age and castration
seminiferous tubules
kidney stones also called ________ ___________ can develop in the sigmoid flexure
42. 30 hours after estrus begins
Reasons for gestation length being affected
oviducts
cow ovulation
cervix
43. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.
what has to happen for males for copulation to occur
prostate gland
burdizzo
Culls bulls earlier (2 reasons)
44. Check feet and legs - look for masculine traits in build such as crest and muscling
cow gestation
cowper's gland
visual evaluation (BSE)
Sperm survival specs
45. Not under a timeline - cow can not be sold as steak
estrous
why does the cow need fat deposits during pregnancy?
Grading choice
Where livelihood is in agriculture
46. 336 days
effects of BST
epididymis: definition - 3 parts - 4 functions
Lutinizing Hormone in males
mare gestation
47. 24 hours before end of estrus cycle
4 major reasons for culling dairy cows
mare's estrous cycle
Dairy Cattle Lactation (standard)
mare ovulation
48. 45-60 days after breeding; re-breed as required
Sperm survival specs
ewe estrus
Lutinizing Hormone in females
dairy cattle pregnancy check
49. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
Bull's fibro-elastic penis
effects of BST
eminal vesicles
cowper's gland
50. Failure to have one testis (gonad) to descend
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Reasons for gestation length being affected
monorchid
cow estrus